v3.26.1
Debt (Tables)
3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Schedule of Debt
MPLX’s outstanding borrowings consist of the following:
(In millions)March 31,
2026
December 31,
2025
MPLX LP:
Fixed rate senior notes$25,969 $25,969 
Consolidated subsidiaries:
ANDX31 31 
Finance lease obligations
Total26,006 26,006 
Unamortized debt issuance costs(185)(174)
Unamortized discount(187)(179)
Amounts due within one year(1,251)(1,502)
Total long-term debt due after one year$24,383 $24,151